Lab-Grown Diamonds: What They Are, How They Compare, and What They Cost

Lab-Grown Diamonds Are Real Diamonds

A lab-grown diamond is produced with CVD or HPHT processes that replicate how diamonds form underground. The result is crystalline carbon identical to a mined diamond in every measurable way — the same 10 Mohs hardness, the same fire and brilliance, and standard diamond testers read it as diamond.

Only the origin differs. It is not a simulant like cubic zirconia or moissanite, which are different materials entirely. World-class labs including GIA and IGI grade and certify lab-grown stones as real diamonds.

Real Ring Price Comparison: Natural vs Lab-Grown

Same design, same stone size (Silver 925 setting): a 0.30ct ring starts at 21,000 THB with a natural diamond vs 8,000 THB lab-grown. A 0.50ct ring — 39,000 THB natural vs 11,000 THB lab-grown. And at 1.00ct, where natural rings run into six figures, the lab-grown version starts around 18,000 THB.

That means the same budget buys a stone 2-3 sizes larger — or the identical ring design at 60-80% less. ZILVY lab-grown rings start around 4,000-5,000 THB in Sterling Silver 925.

ZILVY Lab-Grown Specs

Because growth conditions are controlled, top grades come easier. Every ZILVY lab-grown diamond is D color, VVS clarity, 3EX (Excellent) cut — higher than most natural stones on the market — and stones from 0.30ct come with an IGI certificate.

Every design in our catalog (1,400+) can be ordered with either natural or lab-grown diamonds. Identical setting, identical craftsmanship — only the stone and the price differ.

Which Should You Choose?

Choose natural if you value billion-year rarity and stronger long-term resale value. Choose lab-grown if you want a larger, higher-spec stone within reach — or would rather put the difference toward an 18K gold or platinum setting.

There is no wrong answer — many couples pick natural for the engagement ring and lab-grown for wedding bands. Message LINE @zilvy to compare both against your budget.

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